Four people were shot, one fatally, after an argument broke out between two groups at a house party early Sunday, city police reported.
"We're pretty confident it's a gang related issue," said Michele Gigante, spokeswoman for Sacramento Police.
A 19-year-old man, who has yet to be identified, was pronounced dead at a local hospital.
Three others - a 15-year-old girl, a 17-year-old boy and an 18-year-old man - were also injured by gunfire, according to Gigante. It was not known what their conditions were Sunday but police say they had non-life threatening injuries.
At 1:46 a.m. police were called to a report of multiple shots fired in the 4000 block of Sea Drift Way. Upon arrival, they found that a shooting had occurred that was related to an earlier house party but only a few people on scene.
A short time later, an area hospital reported that they received four victims of a shooting in their emergency room. It was not known how they were transported to the hospital, but it was not by ambulance.
The preliminary investigation found a disturbance had broken out between two groups at the party prior to the shooting. Both the confrontation and the shooting occurred outside the home.
It was not clear if the victims were with different groups or the same group. It was also not known Sunday how many shooters were involved, or whether any of the victims lived at the home where the party was held.
Homicide and gang detectives believe there are more witnesses and are urging those individuals to contact police.
Anyone with information can contact Sacramento police by calling the communications center at (916) 264-5471 or Crime Alert at (916) 443-HELP (4357). They can also text a tip to 274637 (CRIMES), enter SACTIP, followed by the tip information.
Callers can remain anonymous and may be eligible for a reward up to $1,000.